Hello,

I've been using vMix for a while now, but there have been issues with performance and I am not quite sure whether it's because of me messing up settings in the application somewhere or just a performance issue.

Laptops Specifications are here:
Using Windows 8.1
Intel Core i7-4700MQ CPU @ 2.40GHz (8 CPUs)
8GB RAM (Not sure about the DDR)
Integrated Intel HD Graphics 4600, but also a separate GeForce GT 745M graphics card (which I am about 95% sure the vMix is using)


and I suppose that's it, if you need anything else about computer specifications, please do ask.

What I am trying to accomplish with this is a sports broadcast with 1 camera (At least for now).

I use one camera input, with 720p50fps settings. I also have custom scoreboard using Title/XAML input (which actually uses quite a lot of CPU). Video Delay as a replay (only updated to 16th version this morning) and a separate audio input for commentator.

The issues is that I have dropped frames when I want to record all of it. If I am not recording using the record feature I think there usually aren't any problems. I am talking about constant frame drops, I am not sure they should be called frame drops anymore.. the average goes down to 47 at best (42 at worst).

Sorry if this is too messy, it's pretty early for me and English obviously isn't my first language. And if you need anything else, let me know! Thanks for the help in advance!

EDIT: I am using HDD for the recording. Would changing the storage device to SSD help? I mean, I suppose it would help, but how much?
EDIT2: I am also streaming to youtube, if that changes anything.

Thank you for the information. CPU Usage in vMix increases by quite a lot when I use the recording feature. If I would record games on SSD instead of HDD, would that remove the load from the processor or I just need to upgrade the processor. Render time is usually around 20, something like 18-25.

And yeah, I'm starting to think that it is indeed the fault of the CPU

Hey George,

Thank you so much for helping me out. My External Output is correct, as far as I understand this. It is 1280x720 PAL 50p (The camera is Canon Legria HF G30) And the external renderer already was unchecked.

EDIT: I think I can only shoot 50fps in 1920x1080 resolution, so it's being downscaled in vMix. Could that be the issue?

I have 5400 RPM HDD, so there's that. And yes, I am streaming to YouTube in 1280x720/50p

Sorry for the late answer, had two games in a row.

@ waterprof

I prefer to use 'Task Manager' to monitor computer processes and CPU usage (includes all activities the computer is handling).
This might help to identify possible bottlenecks or issues.
Also, what format are you recording to? Some codecs require a lot more CPU processing so if you have the storage space, you may want to try one with less compression.


Ice

Well, we will test what happens when we record on the SSD instead of the HDD, and yes, the laptop has 3.0 USB ports so we can do that to an external drive and we just might. Unfortunately we can't really reduce the stream to 480p. Tho, what exactly do you mean reduce the stream to at least 720p? It already is in 720p.

Oh yeah, no problem. Thank you for the info! Will try out SSD to see if it helps. Anyhow, we are already talking about buying a PC for future livestreams (using multiple cameras, because right no we use only one) So we really are looking for a cheap and temporary solution.